Direct expansion type evaporative cooling unit with self-cleaning and condensate water recycling functions

Abstract

The direct expansion type evaporative cooling unit comprises a machine body, a compressor, a refrigerating system, an evaporative condensation system, a first water pan and a second water pan, the compressor, the refrigerating system, the evaporative condensation system, the first water pan and the second water pan are all arranged in the machine body, the refrigerating system communicates with the compressor, and the first water pan communicates with the second water pan. The first water pan is located below the refrigerating system, the evaporating and condensing system corresponds to the refrigerating system, and the second water pan is located below the evaporating and condensing system. Through the distribution of all structures in the machine body, the efficient cooling evaporation and condensation technology of a large unit is miniaturized, the energy consumption is greatly reduced, and the energy-saving effect is obvious; an integral compact design is adopted, the installation mode is flexible, and the installation is very simple; and by arranging the water disc, condensate water of the evaporator on the inner side is collected and recycled to the water for evaporation and condensation on the outer side, the water consumption of the whole unit is reduced, and the energy-saving effect is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioners, and in particular relates to an evaporative cooling unit with direct expansion, self-cleaning and condensate recovery. Background Art

[0002] With the increasing demand for refrigeration in industrial and commercial places, two problems arise: First, the energy consumption of air conditioners is increasing, and high-efficiency products are needed to save energy and reduce emissions; Second, for multi-story buildings and some places that need to be moved, it is difficult to find an installation location, or it is dangerous and inconvenient to install and maintain after hanging. For some existing evaporative cooling air conditioners, such as the evaporative cooling air conditioner with a water curtain cooling device disclosed in the application number 202420051241.8, the evaporative cooling air conditioner includes an air conditioner chassis and a water curtain cooling device. The water curtain device includes an evaporative water curtain structure, which is complex in structure, and the overall structure is complex, and the energy consumption is relatively large, which is not conducive to energy conservation. Summary of the Invention

[0003] The purpose of the present invention is to provide an evaporative cooling unit with direct expansion, self-cleaning and condensate recovery that can solve the above problems.

[0004] According to one aspect of the present invention, there is provided an evaporative cooling unit with direct expansion, self-cleaning and condensate recovery, including a body, a compressor, a refrigeration system, an evaporative condensation system, a first water receiving tray and a second water receiving tray. The compressor, the refrigeration system, the evaporative condensation system, the first water receiving tray and the second water receiving tray are all arranged in the body. The refrigeration system is connected to the compressor, the first water receiving tray is located below the refrigeration system, the evaporative condensation system is arranged corresponding to the refrigeration system, and the second water receiving tray is located below the evaporative condensation system.

[0005] In some embodiments, the refrigeration system includes a condenser, a direct expansion evaporator, an evaporator fan and a gas-liquid separator. The condenser is connected to the exhaust port of the compressor, the direct expansion evaporator is connected to the condenser, the evaporator fan is arranged at the direct expansion evaporator, the first water receiving tray is located below the direct expansion evaporator, and the direct expansion evaporator is connected to the suction port of the compressor through the gas-liquid separator.

[0006] In some embodiments, the refrigeration system further includes a throttling mechanism and a filter. After passing through the filter and the throttling mechanism in sequence, the condenser is connected to the direct expansion evaporator.

[0007] In some embodiments, the evaporative condensation system includes a water distributor and an evaporative condenser fan. The water distributor is located above the condenser and arranged corresponding to the condenser. The evaporative condenser fan is located above the water distributor, and the second water receiving tray is located below the condenser.

[0008] In some embodiments, the evaporative condensation system further includes a water collector and a packing. The water collector is arranged between the water distributor and the evaporative condenser fan, and the packing is located above the second water receiving tray.

[0009] In some embodiments, the direct expansion type evaporative cooling unit with self-cleaning and condensate recovery further includes a water tray and a spray water pump. The water tray is arranged inside the machine body. Both the first water receiving tray and the second water receiving tray are communicated with the water tray, and the water distributor is communicated with the water tray through the spray water pump.

[0010] In some embodiments, the direct expansion type evaporative cooling unit with self-cleaning and condensate recovery further includes a drain solenoid valve, a cleaning solenoid valve and a nozzle. A filter screen is arranged inside the water tray, and an outlet is arranged on one side of the water tray. The nozzle and the outlet are respectively located on opposite sides of the filter screen. The cleaning solenoid valve is communicated with the nozzle, and the drain solenoid valve is communicated with the outlet.

[0011] In some embodiments, the direct expansion type evaporative cooling unit with self-cleaning and condensate recovery further includes a make-up water electric valve. The make-up water electric valve is located outside the water tray, and the water outlet end of the make-up water electric valve is communicated with the water tray.

[0012] In some embodiments, a partition board is arranged inside the machine body. The partition board is vertically arranged, and the direct expansion type evaporator and the condenser are respectively located on opposite sides of the partition board. The condenser, the water distributor, the evaporative condenser fan, the packing, the second water receiving tray and the water tray are all located on the same side of the partition board.

[0013] In some embodiments, the compressor, the gas-liquid separator and the spray water pump are all located below the direct expansion type evaporator.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. By providing a refrigeration system, the refrigerant is driven to the condenser by the compressor. After being condensed into a refrigerant liquid through the condenser, heat exchange is carried out through the direct expansion type evaporator, and the heat of the surrounding environment can be efficiently absorbed. Then, the cooled air is blown out through the evaporator fan to achieve the refrigeration effect.

[0016] 2. Through the evaporative condensation system, the condenser can be quickly cooled, the heat exchange efficiency of the condenser tube can be improved, the cooling effect can be better achieved, and the energy-saving effect is good.

[0017] 3. Through the distribution of the various structures inside the machine body, the evaporative condensation technology with high-efficiency cooling of large units is miniaturized, and the above problems are solved by combining the direct expansion technology. When the evaporative condensation is under the national standard ambient temperature of 35°C, the condensation temperature can be as low as 36°C, the energy consumption is greatly reduced, and the energy-saving effect is obvious.

[0018] 4. The entire evaporative cooling air conditioner adopts an integrated and compact design. It can be installed indoors, operate by connecting to the external intake and exhaust air ducts, or be installed near the window or in an embedded manner to directly conduct convective heat exchange with the outside. The installation is very simple and can cool the entire inner space;

[0019] 5. By providing a first water receiving tray and recycling the water in the first water receiving tray back into the tray, the condensate of the inner evaporator is collected and recycled for use in the external evaporative condensation, reducing the water consumption of the entire unit and achieving an energy-saving effect;

[0020] 6. The water tray can be automatically cleaned by providing structures such as nozzles. When the water quality in the water tray deteriorates or the cumulative operation reaches the cleaning time, the cleaning solenoid valve is opened, and the nozzles spray high-speed water flow onto the water filter screen to clean the filter screen, and then the drain solenoid valve is opened to discharge sewage, completing the self-cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the principle of the direct-expansion evaporative cooling unit with self-cleaning and condensate recovery of the present invention;

[0022] Figure 2 is a schematic diagram of the structure of the direct-expansion evaporative cooling unit with self-cleaning and condensate recovery of the present invention.

[0023] Figure 3 is a schematic diagram of the internal structure of the direct-expansion evaporative cooling unit with self-cleaning and condensate recovery of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Refer to Figures 1 to 3 . The direct-expansion evaporative cooling unit with self-cleaning and condensate recovery includes a machine body 1, a compressor 2, a refrigeration system 3, an evaporative condensation system 4, a first water receiving tray 5, and a second water receiving tray 6. The compressor 2, the refrigeration system 3, the evaporative condensation system 4, the first water receiving tray 5, and the second water receiving tray 6 are all arranged inside the machine body 1. The refrigeration system 3 is connected to the compressor 2. The first water receiving tray 5 is located below the refrigeration system 3. The evaporative condensation system 4 is arranged corresponding to the refrigeration system 3. The second water receiving tray 6 is located below the evaporative condensation system 4.

[0026] The refrigeration system 3 includes a condenser 31, a direct-expansion evaporator 32, an evaporator fan 33, and a gas-liquid separator 34. The condenser 31 is connected to the exhaust port of the compressor 2. The direct-expansion evaporator 32 is connected to the condenser 31. The evaporator fan 33 is arranged at the direct-expansion evaporator 32. The first water receiving tray 5 is located below the direct-expansion evaporator 32. A condensate collection pipe is arranged between the water tray 7 described below and the first water receiving tray. The direct-expansion evaporator 32 is connected to the suction port of the compressor 2 through the gas-liquid separator 34.

[0027] The refrigeration system 3 further includes a throttling mechanism 35 and a filter 36. After the condenser 31 passes through the filter 36 and the throttling mechanism 35 in sequence, it is connected to the direct expansion evaporator 32. The throttling mechanism 35 is a commonly used throttler in air conditioners and can play a throttling role.

[0028] When the refrigeration system 3 in the present invention is working, the refrigerant compressed by the compressor 2 is delivered to the condenser 31. After being condensed into a refrigerant liquid by the condenser 31, it is delivered to the throttling mechanism 35 through the filter 36, and then to the direct expansion evaporator 32 for heat exchange with the air. The obtained low-temperature cold air is sent out by the evaporator fan 33 to achieve refrigeration of the external environment; the gaseous refrigerant returns to the compressor 2 through the gas-liquid separator 34 to complete the refrigeration process.

[0029] By adopting the direct expansion evaporator 32, the heat exchange efficiency is greatly improved, achieving the effect of efficient refrigeration. At the same time, by providing the first water receiving tray 5, the condensed water at the direct expansion evaporator 32 can be collected.

[0030] The evaporative condenser system 4 includes a water distributor 41 and an evaporative condenser fan 42. The water distributor 41 is located above the condenser 31 and is arranged corresponding to the condenser 31. The evaporative condenser fan 42 is located above the water distributor 41, and the second water receiving tray 6 is located below the condenser 31. By providing the second water receiving tray 6, the water sprinkled by the water distributor 41 and acting on the condenser 31 can be recovered, facilitating the recycling of water. Among them, the water distributor 41 is a water pipe provided with a plurality of nozzles, and water can be sprayed onto the condenser through the nozzles to cool the condenser 31.

[0031] The evaporative condenser system 4 further includes a water collector 43 and a filler 44. The water collector 43 is arranged between the water distributor 41 and the evaporative condenser fan 42, and the filler 44 is located above the second water receiving tray 6. Among them, the water collector 43 is multiple baffles, and the air of the evaporative condenser fan 42 passes through the gaps between adjacent baffles and then acts on the condenser 31. Through the water collector 43, a waterproof effect can be achieved to prevent the water sprayed from the water distributor 41 from acting on the evaporative condenser fan 42. Through the filler 44, the sprayed water after heat exchange can be cooled again and splashing can be prevented.

[0032] The direct expansion evaporative cooler unit with self-cleaning and condensed water recovery of the present invention further includes a water tray 7 and a spray water pump 8. The water tray 7 is arranged inside the machine body 1, and both the first water receiving tray 5 and the second water receiving tray 6 are communicated with the water tray 7. The water distributor 41 is communicated with the water tray 7 through the spray water pump 8.

[0033] During actual use, the water received by the first water receiving tray 5 and the second water receiving tray 6 flows back into the water tray 7 through a water pipe. The water in the water tray 7 can be pumped to the water distributor 41 by the spray water pump 8, and then act on the condenser 31 through the water distributor 41. The water flowing down from the condenser 31 flows downward to the packing 44, and then flows to the second water receiving tray 6 through the packing 44. The water in the second water receiving tray 6 then flows back into the water tray 7, recovering the condensed water generated during the operation of the evaporator 32 and reducing the water consumption of the entire unit.

[0034] The direct expansion type evaporative cooler unit with self-cleaning and condensed water recovery of the present invention further includes a drain solenoid valve 9, a cleaning solenoid valve 10 and a nozzle 20. A filter screen 30 is installed in the water tray 7. One side of the water tray 7 is provided with a water outlet. The nozzle 20 and the water outlet are respectively located on opposite sides of the filter screen 30. The cleaning solenoid valve 10 is communicated with the nozzle 20, and the drain solenoid valve 9 is communicated with the water outlet.

[0035] During actual use, a water quality detection device can be installed in the water tray 7 to detect the water quality in the water tray 7. When it is detected that the water quality in the water tray 7 is poor or after the air conditioner has operated for a corresponding period of time, first open the drain solenoid valve 9 so that the water in the water tray 7 is discharged through the water outlet and the drain solenoid valve 9, and then open the cleaning solenoid valve 10. The external tap water can be sprayed out through the nozzle 20 and sprayed onto the filter screen 30 at a high speed to clean the filter screen 30. Thus, self-cleaning of the water tray 7 can be achieved and the self-cleaning process can be completed.

[0036] The direct expansion type evaporative cooler unit with self-cleaning and condensed water recovery of the present invention further includes a makeup water electric valve 40. The makeup water electric valve 40 is located outside the water tray 7, and the water outlet end of the makeup water electric valve 40 is communicated with the water tray 7. Through the makeup water electric valve 40, external tap water can be conveyed into the water tray 7 through the opened makeup water electric valve to supplement the water in the water tray 7, ensuring that the water distributor can spray water on the condenser 31.

[0037] A partition 11 is provided in the body 1. The partition 11 is vertically arranged. The direct expansion type evaporator 32 and the condenser 31 are respectively located on opposite sides of the partition 11. The condenser 31, the water distributor 41, the evaporative condenser fan 42, the packing 44, the second water receiving tray 6 and the water tray 7 are all located on the same side of the partition 11. Through the reasonable arrangement of the structures in the body 1, the entire air conditioner structure is made more miniaturized. The entire air conditioner has an integrated and compact design, can be installed indoors, work through the external intake and exhaust air ducts, or can be installed by the window or embedded, directly convecting heat with the outside world. The installation is very simple and can cool the overall inner space.

[0038] The compressor 2, the gas-liquid separator 34 and the spray water pump 8 are all located below the direct expansion type evaporator 32. Thus, the compactness of the structure in the entire body 1 is further improved, and the reasonable arrangement of each structure is realized.

[0039] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. The direct-expansion type evaporation cooling unit with self-cleaning and condensate recovery is characterized in that It includes a body (1), a compressor (2), a refrigeration system (3), an evaporative condenser system (4), a first water receiving tray (5) and a second water receiving tray (6). The compressor (2), the refrigeration system (3), the evaporative condenser system (4), the first water receiving tray (5) and the second water receiving tray (6) are all arranged inside the body (1). The refrigeration system (3) is communicated with the compressor (2). The first water receiving tray (5) is located below the refrigeration system (3). The evaporative condenser system (4) is arranged corresponding to the refrigeration system (3). The second water receiving tray (6) is located below the evaporative condenser system (4).

2. The direct-expansion type evaporative cooling unit with self-cleaning and condensate recovery according to claim 1, characterized in that The refrigeration system (3) includes a condenser (31), a direct expansion evaporator (32), an evaporator fan (33) and a gas-liquid separator (34). The condenser (31) is communicated with the exhaust port of the compressor (2). The direct expansion evaporator (32) is communicated with the condenser (31). The evaporator fan (33) is arranged at the direct expansion evaporator (32). The first water receiving tray (5) is located below the direct expansion evaporator (32). The direct expansion evaporator (32) is communicated with the suction port of the compressor (2) through the gas-liquid separator (34).

3. The direct-expansion type evaporative cooling unit with self-cleaning and condensate recovery according to claim 2, wherein The refrigeration system (3) further includes a throttling mechanism (35) and a filter (36). After the condenser (31) passes through the filter (36) and the throttling mechanism (35) in sequence, it is communicated with the direct expansion evaporator (32).

4. The direct-expansion type evaporation cooling unit with self-cleaning and condensate recovery according to claim 3, wherein, The evaporative condenser system (4) includes a water distributor (41) and an evaporative condenser fan (42). The water distributor (41) is located above the condenser (31) and is arranged corresponding to the condenser (31). The evaporative condenser fan (42) is located above the water distributor (41). The second water receiving tray (6) is located below the condenser (31).

5. The direct-expansion evaporative cooling unit with self-cleaning and condensate recovery according to claim 4, wherein The evaporative condenser system (4) further includes a water collector (43) and a filler (44). The water collector (43) is arranged between the water distributor (41) and the evaporative condenser fan (42). The filler (44) is located above the second water receiving tray (6).

6. The direct-expansion type evaporative cooling unit with self-cleaning and condensate recovery according to claim 5, characterized in that, It further includes a water tray (7) and a spray water pump (8). The water tray (7) is arranged inside the body (1). The first water receiving tray (5) and the second water receiving tray (6) are both communicated with the water tray (7). The water distributor (41) is communicated with the water tray (7) through the spray water pump (8).

7. The direct-expansion type evaporative cooling unit with self-cleaning and condensate recovery according to claim 6, characterized in that, It further includes a drain solenoid valve (9), a cleaning solenoid valve (10) and a nozzle (20). A filter screen (30) is arranged inside the water tray (7). An outlet is arranged on one side of the water tray (7). The nozzle (20) and the outlet are respectively located on the opposite sides of the filter screen (30). The cleaning solenoid valve (10) is communicated with the nozzle (20). The drain solenoid valve (9) is communicated with the outlet.

8. The direct-expansion type evaporative cooling unit with self-cleaning and condensate recovery according to claim 7, wherein, It further includes a makeup water electric valve (40). The makeup water electric valve (40) is located outside the water tray (7). The water outlet end of the makeup water electric valve (40) is communicated with the water tray (7).

9. The direct-expansion type evaporative cooling unit with self-cleaning and condensate recovery according to claim 8, characterized in that, A partition plate (11) is provided inside the body (1). The partition plate (11) is vertically arranged. The direct-expansion evaporator (32) and the condenser (31) are respectively located on opposite sides of the partition plate (11). The condenser (31), the water distributor (41), the evaporative condenser fan (42), the packing (44), the second water receiving tray (6) and the water tray (7) are all located on the same side of the partition plate (11).

10. The direct-expansion type evaporation cooling unit with self-cleaning and condensate recovery according to claim 9, characterized in that, The compressor (2), the gas-liquid separator (34) and the spray water pump (8) are all located below the direct-expansion evaporator (32).

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